topic Re: block size in Operating System - HP-UX

block size

j773303 — Tue, 25 Nov 2003 04:43:21 GMT

The default block size is 1KB, but which command can show the block size ? or which configuration file can config block size?

Re: block size

Jean-Louis Phelix — Tue, 25 Nov 2003 05:17:04 GMT

Hi,

It's more related to filesystem, so you can get it using fstyp -v. It's configured during newfs or mkfs.

Regards.

Re: block size

Fabio Ettore — Tue, 25 Nov 2003 05:30:26 GMT

Hi,

# fstyp -v

is the right command and see f_frsize value. It is the value which shows actual block size.
You can change it when (and only when!) you create the filesystem by newfs or mkfs.
Then if you want to modify it, you should re-create filesystem.

KBRC00010670 - Questions on JFS in regards to block size and extents

It is a very good answer to your question, also indicates how to modify block size.

I hope this helps you.

Best regards,
Ettore

Re: block size

Kevin Wright — Tue, 25 Nov 2003 11:03:29 GMT

mkfs -m /lvol will show you the original mkfs command used to create the FS.

Re: block size

RAC_1 — Tue, 25 Nov 2003 11:35:02 GMT

df -g

Re: block size

Tim D Fulford — Tue, 25 Nov 2003 12:04:13 GMT

You question is rather open ended.. block size of what? There are many types of block devices on a system, disks, scsi, modems tapes, logical volumes... etc..

The above would answer your question if you were looking at filesystems or logical volumes.

Tim